Hydraulic swivel.



S. PETERSEN.

HYDRAULIC SWIVEL.

APPLICATION FILED IuLY s. I9Is.

Patented Oct. 1-, 1918.

2 SHEETS-SHEET l.

Witwe/.so

www

attente S. PETERSEN.

HYDRAULIC SWIVEL.

APPLICATION HL'ED JULY 5. ma.

1,280,536. Patented 061.1,1918- 2 SHEETS-SHEET 2.

SVERRE PETERSEN, OF CHATTANOOGA, TENNESSEE, ASSIGNOIR, TO LUCEY MANUFAC-TURING CORPORATION, 0F CHTTANOOG-A, TENNESSEE, A CORPORATION 4TEN-NESSEE.

HYDRAULIC SWIVEL.

Application filed .Tuly 5, 1,918. Serial No. 243,354.

State of Tennessee, have invented certain' new and useful Improvementsin Hydraulic Swivels, of which the following is a specilcation.

This invention relates to well-drilling apparatus and has for its objectto providean improved connection between the rotating drill stem and thehoisting cable, so as to permit of the free rotation of the stem withouttwisting the connection between the latter and the cable.

Another object is to provide means whereby the apparatus may be usedwith a hollow drill stem through which water is conducted under heavypressure from a pump to the point of the drill secured tothe lower endof the rotating stem, and in which the supply hose may be supported in agiven position and retained against movement in relation to the drill`stem while supplying it with water.

A further object of this invention consists in having the bearing housedin a chamber and maintained in a constant supply of lubricant and byhaving the drill stem of one solid piece passing through and extendingbeyond both ends of the chamber, the water used, is preventedv as far aspossible from leaking into the bearing.

By my improved swivel I obtain most advantageous results with a simpleconstruction and have so designed and located the wearing parts that thesame may be easily removed or replaced without requiring thedisassemblage of the main parts of the p swivel.

.With these and other objects in view, which will appear as the natureof my invention is better understood, the invention consists in thenovel features hereinafter described, illustrated in the accompanyingdrawings and more particularly pointed out in the appended claims.

Referring to the drawings;

Figure 1 is a vertical cross section of swivel.

.Fig 2 is a vertical cross section of the Specification of LettersPatent.

Patented Oct. il, 191g.

upper part of the swivel, taken at right angles to Fig. 1.

Fig. 3 is a plan of the swivel.

Fig. 4 is a horizontal Isection on line 4-4 of Fig. 1.

Fig. 5 is a vertical cross section of the locking collar.

-As embodied in the accompanying drawing, the swivel consists of a body1 to which is secured at its upper end, the top 2, by.

means of the bolts 3. The lower `end 0f the body 1 and the top 3 areapertured toreceive the hollow drill stem 4 which is journaled in thebushing 5 located in the body 1 and in the bushing 6 within the top 2.Glands 7 and 8 are fitted in the body and top .respectively withsuitable packings 9 and 10 interposed between the bushin 5 and the gland7 and the bushing 6 and t e gland 8 respectively, thus making thechamber 11 formed by the body and top suitable for maintaining a supplyof oil within the same, for the lubrication ofthe bearing hereinafterdescribed.

Located within the chamber 11 and the surrounding stem 4 is the ring 12which is held rigid to the body 1 by a seat formed in the same.Surrounding t-he` stem 4 on the ortion within the chamber 11 is a collar13.

irectly beneath the collar 13 is another ring 14 which is fastened tothe stem and revolves with the stem during operation. Located betweenthe rings 14 and 12 are the antifriction elements 15. It will be seenthat the weight of the revolving drill stem is supported on the body 1and with the antifriction elements thus placed between the same, aconsiderable amount of the friction is eliminated.

Secured to the upper side of the solid collar 13, is a wearing ring 16,the upper side of which comes in contact with the lower side of the top2. The object of this ring 16 being to take up the wear on the uppersurface of the collar 13, thus eliminating any upward play of the stem,and keeping the antifriction elements in close contact.

I provide a sleeve 17 which surrounds the taining its level above thesaid antifriction` elements.

I provide an opening 18 to introduce and replenish the supply oflubricant to the bearing within, and an opening 18 for the pur- -pose ofremoving lubricant'fromv said bearing.

Connected to the upper end of the drill lstem 4 is a washdown pipe 19with a bore of vforms a suitable bearing for the revolving pipe 19. Agland 25 is litted in the underside of the cylinder 23 and suitablepacking interposed between the same and the bushing 24. A ange 25 isformed around the upper end of the cylinder 23 to which is fastened thebonnet 26 by means of bolts 27. Leading from the bonnet 26 is a pipeconnecting element 28 to which is 'connected'a socket 29 for connectionto a iexible water sup ly pipe (not shown). l

onnection between the swivel and the cable (not shown) is provided forin the usual way by means of a bail link 30 which straddles the upperpart of the swivel and engages the trunnions 31, forming a part of thebody 1, and is held in place by means of the plates 32 which are securedto the trunnions by means of the screws 33. Connected to the lower endof the stem 4, is a bushing or joint 34 which is threaded externally forconnection-to the drill stem (not shown).

To obviate the danger of the bushing 34 working loose or unscrewin when.the drill stem is being disconnected, provide a collar 35 which is freeto travel in one direction and becomes locked to the stem when turned inthe opposite direction. VThe collar 35 is free to move longitudinally onthe stem 4 and is provided with a lug 36 which engages in a slot 37 inthe upper face of the bushing 34. On the inner face of the collar 35, Iprovide a recess or recesses 38 which have located therein rollers- 39held in position at top and bottom by the washers 40 and 41. It will beseen that if the collar is turned so that the roller 39 is forced by thecam face of the recess toward the smaller end, the roller will pressagainst the stem and thus stop further movement of the collar inrelation to the stem. If the collar is turned Vin the opposite'directionthere will be a free movement of the collar owing to the space betweenthe face of the recess and the stem being larger than the roller.l Thusif the collar 35 isV connected to the bushing 34 by -means of the lug 36engaging in the slot 37,

the collar can be arranged so that the locking effect will be obtainedwhen the bushing tends to unscrew.

From the foregoing description it will be noted that I have extended themain drill stem 4 upward beyond the body 1 of the swivel so that asteady running bearing can be obtained and by having the wash down pipeconnected to the upper end of the stem with the joint clear of thelubricated bearing, I am enabled to renew the washdown pipe whennecessary or desirable.

What I claim and desire to secure by Letters Patent is;

1. In a hydraulic swivel, the, combination with a trunnion block and abail supporting the saine, of a hollow stem extending through saidblock, a collar carried by said stem and supported within said block tocarry the weight of said stem, another hollow stem connected to theupper end of the first stem and housed in a separate bearing carriedfrom the trunnion block, means connected to the upper end of the secondstem to introduce a supply of uid through the hollow stem.

2. In a hydraulic swivel, the combination with a trunnionblock and abail supporting the same, of a hollow stem extending through said blockand provided at its lower end with means for connecting the same to thedrill rod, a chamber provided in said block, a collar carried by saidstem and rotatably mounted within said chamber,

`means for introducing a lubricant into through which the'upper end ofthe stem i drical portion having a hollow cap for ad.

mitting fluid to the swivel, a washdown pipe screwed into the upper endof the stem and having its upper end seated in the cap of thecylindrical portion, and renewable bushings provided in said trunnionblock, cap and cylindrical portion to provide bearings for said stem andwashdown pipe.

3. In a hydraulic swivel, the combination with a trunnion block and abail supporting the same, of a hollow stem extending through said blockand provided at its lower end with means for connecting the same to thedrill rod, a chamber provided' in said block, a collar carried by saidstem andl rotatably mounted within said chamber, a cap for said chambersecured to the trunnion block through which the upper end of the stemextends, brackets carried by said cap and terminatin cylindrical port1onhaving a' hollow cap for admitting fluid to the swivel, a washdown attheir upper ends in a aeaeee pipe screwed into the upper end of the stemand having its upper end seated in the cap of the cylindrical portion,and renewable bushin s provided in /said trunnion block, cap ancylindrical portion to provide bearings for said stem' and washdownpipe.

4. In a hydraulic swivel,the combination with a trunnion block and abail supporting the same, of a hollow stem extending through said blockand provided at its lower end with means for connecting the same to thedrill. rod, a chamber provided in said block, a collar carried by saidstem and rotatably mounted within said chamber, a cap for said chambersecured to the trunnion block, brackets carried by said capandterminating at their upper ends in a cylindricalportion havin ahollow cap for admitting fluid to the swlvel, a washdown pipe screwedinto the upper end of the stem and having its upper end seated in thecap of the cylindrical portion, and renewable bushings provided in saidtrunnion block, cap and cylindrical portion to provide bearings for saidstem and washdown pipe.

5. In a hydraulic swivel, the combination with a trunnion block and abail supporting the same, of a hollow stem extending through said blockand provided at its lower end with means for connecting the same to thedrill rod, a chamber provided in said block, a collar carried by saidstem and rotatably mounted within said chamber, means for introducing alubricant into said chamber, an aperture for draining lubricant from thechamber, a cap for said chamber secured to the. trunnion' block,brackets carried by said cap and terminating -at their upper ends in acylindrical portion having a hollow cap for admitting Huid to theswivel, a washdown pipe screwed into the upper end of the stem andhaving its upper end seated in the cap of the cylindrical portion, andrenewable bushings provided in said trunnion block, cap and cylindricalportion to provide bearings for said stem and washdown pipe. v

In testimony whereof I have Set my hand and alixed my signature.

SVERRE PETERSEN.

